<HTML><HEAD><TITLE>ColgenInstance:var_get(+Var, ++What, -Value)</TITLE>
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<H1>ColgenInstance:var_get(+Var, ++What, -Value)</H1>
Obtain information for an individual solver problem variable Var.
<DL>
<DT><EM>Var</EM></DT>
<DD>A solver problem variable for the solver associated with ColgenInstance
</DD>
<DT><EM>What</EM></DT>
<DD>Specification for information wanted (atom)
</DD>
<DT><EM>Value</EM></DT>
<DD>Returned value of What
</DD>
</DL>
<H2>Description</H2>
<P>
   Retrieve information about solver constraints and results related to a
   particular variable, for the colgen instance ColgenInstance.
   What can take one of the following values:
<DL>
    <DT><TT>mp_val</TT>
    <DD>Returns the floating-point solution for variable Var.
<P>
    <DT><TT>cost</TT>
    <DD>Returns the master problem objective coefficient
    associated with the variable Var.
<P>
    <DT><TT>coeffs</TT>
    <DD>Returns a list of Id-Val pairs representing the constraint
    identifiers and coefficient values for the master problem
    constraints in which the coefficient is non-zero associated
    with the variable Var.
<P>
    <DT><TT>aux</TT>
    <DD>Returns the auxiliary information associated with the
    variable Var. The intended use is for subproblem information
    not represented in the master problem constraint coefficients.
</DL>

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